Deleted Formulas reappear as attachments when converting msg to pdf

Aspose.Email Product Family
1

test5.zip (28,0 KB)
test5.pdf (159,0 KB)

Hello,

i have an issue with converting msg files to pdf. When i convert the attached msg file to pdf the formulas which i deleted reappear as attachments. Is there some way to fix this?

BR Mathias

2

Hello @Mathias.C ,

Welcome to our support forum!
Could you please share a code sample you are using for the conversion? This will help us better understand the issue.

Thank you.

3

Hello,

i was able to investigate this a bit further. So it seems like formulas are stored as inline attachments. When deleting them in outlook they are not really deleted. They remain as attachments but not as inline attachments. They are not shown in outlook, but they are still there if you check the file with aspose mail. Is there some way to determine if these attachments are shown in outlook or not? I mean there must be some kind of trigger in the file. However, i was not able to find it yet.

var mailMessage = MailMessage.Load(metadata.OriginalStream);
var mapiMessage = MapiMessage.FromMailMessage(mailMessage);
var attachments = mapiMessage.Attachments.ToList();
foreach (var attachment in attachments)
{
    //doing things, attachments are not inline anymore and not visible in outlook but still appear here
}
4

Hello @Mathias.C ,

The PR_ATTACHMENT_HIDDEN property (MapiPropertyTag.PR_ATTACHMENT_HIDDEN) is likely what Outlook uses to mark attachments as invisible.

You can check for this property like this:

var isHidden = attachment.Properties[MapiPropertyTag.PR_ATTACHMENT_HIDDEN]?.GetBoolean() ?? false;

If isHidden is true, then the attachment is hidden in Outlook but still present in the message file.

5

Hello this does not do the trick. It seems as if saving the msg after deleting the formula converts the formula to a “normal” attachment. I cannot find any property, which tells me if the attachment has to be shown or not. I can only see it in outlook if it is there or not. Please check out the two files i’ve attached.
visible_unvisible_attachment.zip (45,7 KB)

6

Hello @Mathias.C,

Could you confirm if the PR_ATTACHMENT_FLAGS (MapiPropertyTag.PR_ATTACHMENT_FLAGS) property is present and what its value is?

Could you also confirm if the original file was in EML format before being saved as MSG? If possible, please share the original EML file as well.

Thank you.